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A277686 The number of nonisomorphic graphs on n vertices whose chromatic symmetric function in the p basis has a nonzero coefficient for each possible term. 2
1, 1, 2, 5, 20, 91, 823 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

All graphs with a Hamiltonian path are included in this count. The smallest n for which a graph with n vertices satisfies this property and does not have a Hamiltonian path is n=5.

LINKS

Table of n, a(n) for n=1..7.

CROSSREFS

Cf. A277686.

Sequence in context: A258830 A002484 A280102 * A115082 A020105 A347071

Adjacent sequences:  A277683 A277684 A277685 * A277687 A277688 A277689

KEYWORD

nonn,more

AUTHOR

Caleb Ji, Sam Heil, Oct 26 2016

STATUS

approved

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Last modified September 28 10:48 EDT 2021. Contains 347714 sequences. (Running on oeis4.)